CN104647025A - Hydraulic self-centering fixture - Google Patents
Hydraulic self-centering fixture Download PDFInfo
- Publication number
- CN104647025A CN104647025A CN201510071410.XA CN201510071410A CN104647025A CN 104647025 A CN104647025 A CN 104647025A CN 201510071410 A CN201510071410 A CN 201510071410A CN 104647025 A CN104647025 A CN 104647025A
- Authority
- CN
- China
- Prior art keywords
- stirring
- hood
- shaped support
- gripper shoe
- sliding sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/001—Article feeders for assembling machines
- B23P19/006—Holding or positioning the article in front of the applying tool
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
- B25B11/02—Assembly jigs
Abstract
The invention relates to a hydraulic self-centering fixture, which comprises a support plate. The hydraulic self-centering fixture is characterized in that a rectangular hole is formed in the support plate, wherein a cover-shaped bracket capable of covering the rectangular hole is arranged on the upper surface of the support plate; pin shafts are arranged between two sidewalls close to the two ends of the cover bracket; stirring forks are arranged on the pin shafts; each stirring fork has two stirring heads; a vertical sliding sleeve is connected to the top of the cover-shaped bracket; a hydraulic cylinder is arranged above the vertical sliding sleeve; a piston rod of the hydraulic cylinder extends into the cover-shaped bracket through the vertical sliding sleeve, and is connected with a pull rod; grooves are formed in the two sides of the lower end of the pull rod; the opposite two stirring heads of the two stirring forks extend into the corresponding grooves respectively; two sliding plates are arranged below the support plate; stirring holes are formed in the two sliding plates; the two stirring heads on the other same side of the two stirring forks are inserted into the corresponding stirring holes respectively; clamping blocks are connected to the lower parts of the sliding plates. According to the hydraulic self-centering fixture, the clamping center is not required to be regulated, so that production efficiency can be greatly improved; the hydraulic self-centering fixture is applied to the clamping of rod-like or tubular workpieces.
Description
Technical field
The present invention relates to a kind of fixture.Specifically, be used to the self-centering fixture clamping workpiece to be machined, be particularly useful for the clamping to shaft-like or tubular workpiece on automatic assembly line.
Technical field
All know at mechanical processing industry, on some automatic assembly lines, fixture need be adopted to be fixed shaft-like or tubular workpiece.Traditional fixture is included in support side and arranges a fixed clamp block, the dynamic fixture block of a dependence actuating unit promotion is set at the offside of clamp block again, promote dynamic fixture block by actuating unit, shaft-like or tubular workpiece can be realized to be clamped between clamp block and dynamic fixture block.Because the actuating unit of above-mentioned fixture by clamp block, dynamic fixture block and the dynamic fixture block of promotion forms, clamp block is in the state of maintaining static all the time, and only have dynamic fixture block in motion, when after the shaft-like or tubular workpiece assembling completing a kind of specification (a kind of diameter), when more shaft-like the or tubular workpiece of another kind of specification (another kind of diameter) being assembled, just need to unload clamp block to adjust Clamping Center, and the adjustment of Clamping Center is very difficult.Therefore, adopt above-mentioned fixture to clamp the shaft-like of different size or tubular workpiece, not only Clamping Center is aimed at more difficult, and production efficiency is low.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of self-centering hydraulic fixture.Adopt this fixture to clamp the shaft-like of different size or tubular workpiece, do not need to adjust Clamping Center, can greatly enhance productivity.
The problems referred to above that the present invention will solve are realized by following technical scheme:
Self-centering hydraulic fixture of the present invention comprises gripper shoe, is characterized in that gripper shoe has slot, support plate upper surface has the hood-shaped support that can cover slot.On the two side at hood-shaped support two, all there is axis hole, between relative two side axis hole, all have bearing pin, described two bearing pins all have the shift fork that can rotate around bearing pin.Hood-shaped cradle top center has and is connected as a single entity and the vertical sliding sleeve be communicated with hood-shaped rack bore with it, has hydraulic cylinder above vertical sliding sleeve, and down and stretch in hood-shaped support by vertical sliding sleeve, described piston-rod lower end is connected with pull bar to the piston rod of hydraulic cylinder.Described shift fork all has two shifting blocks, and the angle between two shifting blocks on same shift fork is less than 90 degree.Both sides, pull bar lower end are all fluted, and the shifting block that described two shift forks are relative stretches in the corresponding recesses of pull bar lower end in moving type respectively.Have two pieces of slide plates that can slide along gripper shoe face below gripper shoe, the glide direction of described slide plate and the axis of bearing pin are perpendicular, and two pieces of slide plates all have pulling hole, and two shifting blocks of two another homonymies of shift fork are that slip shape inserts in corresponding pulling hole respectively.All fixture block is connected with below described slide plate.
Wherein, all there is lower chimb on the longitudinal both sides of lower surface of two gripper shoes, and the following of twice chimbs all has internal projection.All there is cannelure the both sides of two pieces of slide plate its upper surfaces contiguous, in being slidably matched between described cannelure and described internal projection.
As can be seen from the above scheme, due to gripper shoe having slot, support plate upper surface there are the vertical projection that can cover slot and the suitable hood-shaped support of slot.On the two side at hood-shaped support two, all there is axis hole, between relative two side axis hole, all have bearing pin, two bearing pins all have the shift fork that can rotate around bearing pin.Hood-shaped support has hydraulic cylinder, and down and stretch in hood-shaped support, and piston-rod lower end is connected with pull bar to the piston rod of hydraulic cylinder.Described shift fork all has two shifting blocks, and the angle between two shifting blocks on same shift fork is less than 90 degree.Both sides, pull bar lower end are all fluted, and the shifting block of described two shift fork homonymies stretches in the corresponding recesses of pull bar lower end in moving type respectively.Two pieces of slide plates that can slide along gripper shoe face are had below gripper shoe, the glide direction of described slide plate and the axis of described bearing pin perpendicular, two pieces of slide plates all have pulling hole, and two shifting blocks of two another homonymies of shift fork insert in the pulling hole on two pieces of slide plates in slip shape respectively.All fixture block is connected with below described slide plate.During work, inside contracting by hydraulic cylinder piston rod, pull bar can be driven to move up together, again by pull bar drive two shift forks respectively around corresponding bearing pin to inner rotary, and then to be driven together with two pieces of slide plates by the shifting block of two the shift fork homonymies be connected with two slide plates and inwardly slide, two fixture blocks be connected with slide plate are inwardly closed up, until realize clamping that is shaft-like or tubular workpiece.Otherwise, overhanging by hydraulic cylinder piston rod, stretch under can driving pull bar, two shift forks are driven inwardly to rotate around corresponding bearing pin respectively by pull bar again, and then to be driven together with two pieces of slide plates by the shifting block of two the shift fork homonymies be connected with two slide plates and outwards slide, two fixture blocks be connected with slide plate are outwards separated, relieves the clamping to shaft-like or tubular workpiece.As can be seen here; no matter be that shaft-like or tubular workpiece are clamped or removed clamping that is shaft-like or tubular workpiece; two fixture blocks are all inwardly close up or outwards separate simultaneously; the present invention is just determined its Clamping Center after finalization of the manufacture, avoids in use procedure afterwards the trouble and difficulty that need to adjust Clamping Center.Do not need to adjust Clamping Center due in use procedure afterwards again, no matter clamp the shaft-like or tubular workpiece of any specification (diameter), do not need to regulate Clamping Center, compared with background technology, can greatly enhance productivity.
Accompanying drawing explanation
Fig. 1 is self-centering hydraulic fixture structural representation of the present invention;
Fig. 2 is the A-A cross-sectional schematic of Fig. 1, and two fixture blocks are wherein in closed configuration and are clamped with workpiece;
Fig. 3 is the A-A cross-sectional schematic of Fig. 1, and two fixture blocks are wherein in separated position.。
Detailed description of the invention
As shown in Figure 1, Figure 2 and Figure 3, self-centering hydraulic fixture of the present invention comprises gripper shoe 4, gripper shoe 4 is processed with slot 9.Gripper shoe 4 upper surface is provided with hood-shaped support 3, and the oral area of hood-shaped support 3 is fixed on the surrounding of slot 9.On the two side at hood-shaped support 3 two, be all processed with axis hole, between relative two side axis hole, bearing pin 10 be all installed, described two bearing pins 10 are all provided with the shift fork 15 that can rotate around bearing pin 10.Hood-shaped support 3 top center be provided with to be connected as a single entity with it and with the vertical sliding sleeve 1 of hood-shaped support 3 inner space, above vertical sliding sleeve 1, hydraulic cylinder 12 is installed, down and stretch in hood-shaped support 3 by vertical sliding sleeve 1, described piston rod 11 lower end is connected with pull bar 13 to the piston rod 11 of hydraulic cylinder 12.
Described shift fork 15 is all containing two shifting blocks 16, and the angle between two shifting blocks 16 on same shift fork 15 is less than 90 degree.Both sides, pull bar 13 lower end are all processed with groove 14, and a pair shifting block 16 that described two shift forks 15 are relative stretches in a pair groove 14 of pull bar 13 lower end in moving type respectively.Gripper shoe 4 is provided with two pieces of slide plates 6 that can slide along gripper shoe 4 below, the glide direction of described slide plate 6 and the axis of bearing pin 10 perpendicular, two pieces of slide plates 6 are all processed with pulling hole 8, two shift forks 15 another relative shifting block 16 is inserted in corresponding pulling hole 8 in slip shape respectively.Described slide plate 6 is all connected with fixture block 17 below.
Wherein, the longitudinal both sides of the lower surface of two gripper shoes 4 are all processed with the following of lower chimb 5, twice chimbs 5 and are all processed with internal projection 7.The both sides of two pieces of slide plate 6 its upper surfaces contiguous are all processed with cannelure, in being slidably matched between described cannelure and described internal projection 7.
During work, by inside contracting of the piston rod 11 of hydraulic cylinder 12, pull bar 13 can be driven to move up together, again by pull bar 13 drive two shift forks 15 respectively around corresponding bearing pin 10 to inner rotary, and then to be driven together with two pieces of slide plates 6 by the shifting block 16 of two shift fork 15 homonymies be connected with two slide plates 6 and inwardly slide, two fixture blocks 17 be connected with slide plate 6 are inwardly closed up, until realize clamping that is shaft-like or tubular workpiece 18, sees Fig. 2.Otherwise, overhanging by the piston rod 11 of hydraulic cylinder 12, pull bar can be driven to stretch for 13 times, two shift forks 15 are driven inwardly to rotate around corresponding bearing pin 10 respectively by pull bar 13 again, and then to be driven together with two pieces of slide plates 6 by the shifting block 16 of two shift fork 15 homonymies be connected with two slide plates 6 and outwards slide, two fixture blocks 17 be connected with slide plate 6 are outwards separated, relieves clamping that is shaft-like or tubular workpiece 18, see Fig. 3.
Claims (2)
1. a self-centering hydraulic fixture, comprises gripper shoe (4), it is characterized in that gripper shoe (4) has slot (9), gripper shoe (4) upper surface has the hood-shaped support (3) that can cover slot (9); On the two side at hood-shaped support (3) two, all there is axis hole, all have bearing pin (10) between relative two side axis hole, described two bearing pins (10) all have the shift fork (15) that can rotate around bearing pin (10); Hood-shaped support (3) top center have to be connected as a single entity with it and with the vertical sliding sleeve (1) of hood-shaped support (3) inner space, there is hydraulic cylinder (12) vertical sliding sleeve (1) top, the piston rod (11) of hydraulic cylinder (12) also stretches in hood-shaped support (3) by vertical sliding sleeve (1) down, and described piston rod (11) lower end is connected with pull bar (13); Described shift fork (15) all has two shifting blocks (16), and the angle between two shifting blocks on same shift fork is less than 90 degree; Both sides, pull bar 3 lower end all fluted (14), a pair shifting block that described two shift forks 1 are relative stretches in the corresponding recesses (14) of pull bar 3 lower end in moving type respectively, gripper shoe (4) has the two pieces of slide plates (6) can slided along gripper shoe (4) below, the glide direction of described slide plate (6) and the axis of bearing pin (10) perpendicular, two pieces of slide plates (6) all have pulling hole (8), and a pair shifting block of two another homonymies of shift fork (15) inserts in corresponding pulling hole (8) in slip shape respectively; Described slide plate (6) is all connected with fixture block (17) below.
2. self-centering hydraulic fixture according to claim 1, it is characterized in that all there is lower chimb (5) on the longitudinal both sides of the lower surface of two gripper shoes (4), the following of twice chimbs (5) all has internal projection (7); All there is cannelure the both sides of two pieces of slide plate (6) its upper surfaces contiguous, in being slidably matched between described cannelure and described internal projection (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510071410.XA CN104647025A (en) | 2015-02-11 | 2015-02-11 | Hydraulic self-centering fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510071410.XA CN104647025A (en) | 2015-02-11 | 2015-02-11 | Hydraulic self-centering fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104647025A true CN104647025A (en) | 2015-05-27 |
Family
ID=53238937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510071410.XA Pending CN104647025A (en) | 2015-02-11 | 2015-02-11 | Hydraulic self-centering fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104647025A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2542959A1 (en) * | 1975-09-26 | 1977-03-31 | Eugen Maier | Workpiece clamp or holding device - has three interconnected clamping elements sliding at equal rate towards centre of work |
| CN101817152A (en) * | 2009-02-26 | 2010-09-01 | 上海友声衡器有限公司 | Self-centering fixing device |
| CN102019593A (en) * | 2009-09-15 | 2011-04-20 | 汤守信 | Automatic centering fixture |
| CN102152147A (en) * | 2011-04-26 | 2011-08-17 | 浙江联强数控机床股份有限公司 | Automatic centering hydraulic clamp mechanism |
| CN102886703A (en) * | 2012-09-25 | 2013-01-23 | 宁波松鹰汽车部件有限公司 | Hydraulic self-centering fast clamping device |
| CN204545905U (en) * | 2015-02-11 | 2015-08-12 | 无锡惠发特精密机械有限公司 | A kind of self-centering hydraulic fixture |
-
2015
- 2015-02-11 CN CN201510071410.XA patent/CN104647025A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2542959A1 (en) * | 1975-09-26 | 1977-03-31 | Eugen Maier | Workpiece clamp or holding device - has three interconnected clamping elements sliding at equal rate towards centre of work |
| CN101817152A (en) * | 2009-02-26 | 2010-09-01 | 上海友声衡器有限公司 | Self-centering fixing device |
| CN102019593A (en) * | 2009-09-15 | 2011-04-20 | 汤守信 | Automatic centering fixture |
| CN102152147A (en) * | 2011-04-26 | 2011-08-17 | 浙江联强数控机床股份有限公司 | Automatic centering hydraulic clamp mechanism |
| CN102886703A (en) * | 2012-09-25 | 2013-01-23 | 宁波松鹰汽车部件有限公司 | Hydraulic self-centering fast clamping device |
| CN204545905U (en) * | 2015-02-11 | 2015-08-12 | 无锡惠发特精密机械有限公司 | A kind of self-centering hydraulic fixture |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150527 |